I also recall there being pacific islanders who mistook american, australian, and british military personel as thier dead ancestors during WWII and built cults around the machines they arrived in: Thier planes.
I would imagine a giant carved skull with a massive ropereed impersonation of beard in place of a bamboo and vine/palm leaf plane.
This is not true. "Primitive" are no more likely to mistake a living, breathing person for a dead ancestor than you are. Cargo cults arose as a result of confusion about cause and effect, which everyone is susceptible to, not just Pacific islanders. The insular islanders practiced indigenous religions that emphasized that correct behavior is rewarded with material success. This is not so different than the various material rewards offered in the five books of Moses; reward and punishment in classical monotheism were taken to refer to tangible rather than spiritual occurrences.
Their way of life had persisted for hundreds of generations when suddenly war brought hundreds of strange foreigners who operated strange machines, built inexplicable buildings and were unimaginably wealthy, sharing some of that wealth with the islands' inhabitants in the form of food and tools . Having never encountered modern factories or farms, the island inhabitants perceived these items as miraculous and concluded that either the foreigners had figured out the correct behavior to get rewards from their own ancestors, or that the strangers had wrongfully intercepted divine rewards that the islanders' ancestors had intended to send to
them. The first conclusion resulted in the formation of cargo cults; the second, in uprisings and returns to traditionalism (as with the John Frum movement).